Absorbent cowl for the chimneys of hydrocarbon-burners



(No Model.)

B. J. JAGOBUS.

ABSURBENT UOWL FOR THE UHIMNEYS 0F HYDROGARBUN BURNERS.

No. 826,565. Patented Sept. 22, 1885 WI TI\IEE5E5 7; M w

INYENTUR N. PETERS. PhDln-Lilhognp NITED STATES PATENT FFICE.

REBEOOA JANE JAOOBUS, OF OAKLAND, CALIFORNIA.

ABSORBENT COWL FOR THE CHIMNEYS F HYDROCARBON-B URNERS.

SPECIFICATION forming part of Letters Patent No. 326,565, dated September 22, 1885.

Application filed May 26, [884. (No model.) I

To all whom it may concern: not to interfere with each other, and they ex Be it known that I, REBEOOA JANE JACO- tend only about half way through the cover. BUs', a citizen of the United States, residing at Inwardly-projecting rims or lugs E E are Oakland, in the county of Alameda and State cast upon the interior surface of the cover to 5 5 of California, have invented or discovered a receive and support two perforated absorbnew and useful Absorbent Cowl for the Ohiming shelves or plates, F and G. These plates neys of Hydrocarbon-Burners, such asStoves, are made of plaster-of-paris, and the upper Lamps, &c., of which the following is a specione, or that designated by the letter F, is cast fi tjon, I about an inch and one-half in thickness while 6o 10 My invention or discovery consists in prothe lower one, G, need not be made so thick. viding a hood or cowl made of plaster-of- The lowerfaces of both theseplatesarepierced paris or other solid or porous substance cawith funnel-shapcd or tapering holes in a simipable of absorbing gases, which has indentalar manner to those described in the inner tions on its inner face, and is provided with face of the cover or hood, which holes pass 6 1 one or more internal perforated plates and through the upper faces of both plates. The which is placed over the draft-hole or chimholes in the upper face of the lower plate are, ney of hydrocarbon-burning vessels, such as however, made a little larger than those in the stoves, lamps, &c., to receive and absorb the upper face of the upper plate-say about the smoke and gases or waste products of comsize or diameter of that made by an ordinary 7o bustion that are unconsumed. pin-while those which terminate in the up- The accompanying drawing, forming a part per face of the upper plate are scarcely perof this specification, represents a central verceptible, the object being to permit as much tical section taken through my improved of the waste products of combustion as the smokeabsorbing hood or cowl for hydrocarlower plate will readily absorb to enter it,and 75 hon-burning vessels. the surplus or residue to pass up by draft or A represents a hood or cover, which is cast suction through the pin-holes of this lower or molded of ground gypsum, plaster-ofplate and on and into the upper plate, and paris, or other mineral, earthy, orporous subany surplus that is not absorbed by the upstance capable of absorbing smoke and gases; per plate will still pass through the smaller 80 0 but I prefer plaster-of-paris,as this mineral is perforations contained in the upper plate into comparatively cheap and easy to operate with. the body of the hood where it is entirely ab- The cover is supported upon the sides of the sorbed. stove'or chimney of the vessel or burner by Care should be taken, however, not to means of feet or lugs B, While the lower rim pierce the holes entirely through the cover or 8 5 or edge of the cover extends downward a lithood,as it is intended that these holes shall be tle below the top of the stove or chimney A, only half-way through this cover. N o indi- .so as to admit atmospheric air and permit it cation of these holes should be seen on the to pass freely up into the cover. outer surface thereof. Thus it will be seen For lamp-chimneys a supporting-rim may that as no outlet is made in the cover or hood o 40 be connected to the chimney or lamp capable the lesser products of combustion remaining of sustaining the weight of the cover, lid, or will be absorbed by the cover after passing hood. through the plates beneath, and no trace of The top of the cover is provided with a either smoke or gas remains to escape into dome or knob, O, as shown, useful for the the apartment. 95 5 purpose of lifting the cover and removing it Should the absorbing-plates and hood befrom the vessel when desired. A come fouled or clogged by constant use, they The inner faceof the hood or cover is thickly may be immersed in water at the ordinary penetrated with conical or funnel shaped temperature for a fewminutes,when they will holes D, of about the sizeof an ordinary nailbe renewed and ready for use again. 10:: head at the initial point, and these holes are I am aware that a gas-stove has been promade as closely together as possible yet so as vided with a perforated cover composed of a porous refractory material,

such as terracotta or fire-clay, the perforations in said cover being proportioned in size and number to the capacity of the gas burner or burners, so that the products of combustion will be retained in the stove and consumed without vitiatin'g the air. This, however,I do not claim.

' My absorbent cowl being formed with indentations on its inner'face and provided with removable internal perforated plates, as described, presents an extended surface for the complete absorption of the smoke and unconsumed gases .of a hydrocarbon burner. It will also be observed that the construction of the cowl is such that it can be readily cleansed when required.

REBEOCA J. JAOOBUS. [L. 8.]

Witnesses:

O. W. M. SMITH, WILMER BRADFORD. 

